Finding Windows settings
Describe a desired outcome in ordinary language instead of knowing the exact control-panel or Settings path.
Independent tool overview
Mu at a glance
Mu is Microsoft's 330-million-parameter on-device language model that maps natural-language requests to Windows Settings recommendations and permitted system changes on Copilot+ PCs.
Visit the official Mu site ↗
- Developer
- Microsoft
- Model size
- 330 million parameters
- Architecture
- Encoder-decoder transformer
- Primary deployment
- Agent in Windows Settings
- Processing
- Runs locally on the device NPU
- Required device
- Copilot+ PC with a 40+ TOPS NPU
- Availability
- Built into supported Windows 11 updates
Overview
What Mu is
Mu is a small, task-specific Microsoft model built for fast inference on the neural processing unit in Copilot+ PCs. Its main public deployment is the agent in Windows Settings, where it interprets requests such as making the pointer easier to see and maps them to relevant settings actions.
Microsoft uses a 330M encoder-decoder architecture, quantization, grouped-query attention, rotary positional embeddings, and NPU-specific optimization to reduce latency and power use. The company reports more than 100 tokens per second generally and more than 200 tokens per second in one Surface Laptop 7 test.
Mu is not a standalone assistant, downloadable model, or public API. Consumers encounter it as a built-in Windows feature on eligible hardware, while the operating system controls the interface, permissions, fallbacks, and ability to undo a change.
Use cases
Who Mu is best for
The strongest fit depends on the job you need the product to complete, not the size of its feature list.
Accessibility adjustments
Locate settings for display, pointer, voice, focus, and other Windows usability needs more quickly.
Basic troubleshooting
Receive relevant Settings recommendations and navigation links for supported device issues.
Fast on-device intent mapping
Use a narrow local model to translate a request into a supported Settings function without relying on a general chatbot for every step.
Capabilities
Core Mu features
Natural-language Settings search
Understands descriptive requests and surfaces the most relevant Windows setting or recommended action.
Permissioned changes
Can automate supported, undoable settings changes only after the user explicitly asks it to act.
Local NPU inference
Runs the fine-tuned Settings Mu model on the device's neural processing unit for low latency and efficient power use.
Search fallback
Returns standard indexed or semantic search results when the model cannot classify a request with enough confidence.
Hardware-specific optimization
Uses quantized operations tuned across Qualcomm, AMD, and Intel Copilot+ PC silicon.
Multilingual availability
Current Windows requirements list English, French, German, Hindi, Italian, Japanese, Korean, Portuguese, Spanish, and Simplified Chinese.
Process
How the Mu workflow works
Step 1
Confirm compatibility
Use a Copilot+ PC running Windows 11 version 24H2 with the required update or a newer supported version.
Step 2
Open Settings
Launch Windows Settings and type a complete description of what you want into the search box.
Step 3
Review the recommendation
Check the proposed setting, target device, and navigation link, especially when the request could apply to several displays or controls.
Step 4
Approve the action
Explicitly ask the agent to make a supported change; it does not change settings merely because a result appeared.
Step 5
Verify or undo
Confirm the device behaves as intended and use the offered undo path if the result is not right.
Cost
Mu pricing and free plan
Microsoft does not sell Mu as a separate product. The Settings agent is included with supported Windows 11 updates on an eligible Copilot+ PC, so the material cost is the compatible hardware rather than a Mu subscription.
Mu / Agent in Settings
Included
Available as a Windows 11 feature on compatible Copilot+ PCs without a separate Mu plan.
- No standalone subscription
- No separate app purchase
- Windows Update required
- Availability varies by device, language, and geography
Required Copilot+ PC
Hardware purchase
Buy an eligible Windows device with the NPU and system specifications required for Copilot+ experiences.
- 40+ TOPS NPU
- At least 16GB RAM
- At least 256GB storage
- Windows 11 version 24H2 or newer
Pricing checked . Check current pricing at the source ↗
Assessment
Mu strengths and limitations
Where it stands out
- Runs locally on dedicated NPU hardware for fast responses and low power use
- Turns outcome-based language into relevant Settings navigation and supported actions
- Requires an explicit user request before changing a setting and provides an undo path
- Falls back to conventional search when confidence is insufficient
- Its narrow task-specific design is substantially smaller than a general-purpose assistant model
What to consider
- Mu is not a standalone chatbot, downloadable model, SDK, or public API
- The Settings agent requires a Copilot+ PC and supported Windows 11 updates
- It is designed for Windows Settings intent mapping, not open-ended writing, research, coding, or general computer control
- Short or ambiguous requests can be harder to classify than clear multi-word descriptions
- Requests involving multiple monitors or overlapping settings still require the user to verify the correct target
- IT administrators can disable the feature, and availability varies by language, market, device, and update rollout
Compare
Mu alternatives
The right alternative depends on the specific output, workflow, controls and budget your project requires.
Business Operations
Microsoft Copilot
Choose Microsoft Copilot for broad questions, writing, research, and assistance beyond the Windows Settings panel.
Explore Microsoft Copilot →Consumer
Copilot Cowork
Choose Copilot Cowork for multi-step work across Microsoft 365 rather than a narrow on-device settings action.
Explore Copilot Cowork →Business Operations
ChatGPT
Choose ChatGPT for a general-purpose assistant across many devices and tasks, while making Windows changes manually.
Explore ChatGPT →Questions
Mu FAQs
What is Microsoft Mu?
Mu is a 330M-parameter encoder-decoder language model optimized for on-device NPU inference. Microsoft fine-tuned it to power natural-language search and supported actions in Windows Settings.
Can I download the Mu model?
Microsoft has not released Mu as a public download, standalone application, or general developer API. Its documented consumer deployment is the agent built into Windows Settings.
Which computers support the Mu Settings agent?
Microsoft lists the feature for Copilot+ PCs running Windows 11 version 24H2 with the required update or later. Copilot+ PCs require a 40+ TOPS NPU, at least 16GB of RAM, and at least 256GB of storage.
Does Mu run locally?
Yes. Microsoft says Settings Mu runs locally on the Copilot+ PC's NPU to analyze the query and match it with settings already available in Windows.
Can Mu change Windows settings automatically?
It can complete supported, undoable changes only when the user explicitly requests the action. Merely entering a query produces a recommendation; it does not silently change the PC.
Does Microsoft Mu cost extra?
There is no separate Mu subscription. The feature comes through Windows on eligible Copilot+ PC hardware, so users pay for the compatible device and any normal Windows licensing associated with it.
Bottom line
Our Mu verdict
Mu is a good example of where a tiny, task-specific local model beats a general chatbot: quickly mapping plain-language requests to Windows settings. It is useful for Copilot+ PC owners, but it should be understood as an embedded Windows component—not a model developers can download or a general AI product worth buying on its own.
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